Files
neochat/src/contentprovider.h

91 lines
3.0 KiB
C++

// SPDX-FileCopyrightText: 2025 James Graham <james.h.graham@protonmail.com>
// SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
#pragma once
#include <QCache>
#include <QObject>
#include <QQmlEngine>
#include "models/messagecontentmodel.h"
#include "models/threadmodel.h"
#include "neochatroom.h"
#include "pollhandler.h"
/**
* @class ContentProvider
*
* Store and retrieve models for message content.
*/
class ContentProvider : public QObject
{
Q_OBJECT
QML_ELEMENT
QML_SINGLETON
public:
/**
* Get the global instance of ContentProvider.
*/
static ContentProvider &self();
static ContentProvider *create(QQmlEngine *engine, QJSEngine *)
{
engine->setObjectOwnership(&self(), QQmlEngine::CppOwnership);
return &self();
}
/**
* @brief Returns the content model for the given event ID.
*
* A model is created if one doesn't exist. Will return nullptr if evtOrTxnId
* is empty.
*
* @warning If a non-empty ID is given it is assumed to be a valid Quotient::RoomMessageEvent
* event ID. The caller must ensure that the ID is a real event. A model will be
* returned unconditionally.
*
* @warning Do NOT use for pending events as this function has no way to differentiate.
*/
Q_INVOKABLE MessageContentModel *contentModelForEvent(NeoChatRoom *room, const QString &evtOrTxnId, bool isReply = false);
/**
* @brief Returns the content model for the given event.
*
* A model is created if one doesn't exist. Will return nullptr if event is:
* - nullptr
* - not a Quotient::RoomMessageEvent (e.g a state event)
*
* @note This method is preferred to the version using just an event ID as it
* can perform some basic checks. If a copy of the event is not available,
* you may have to use the version that takes an event ID.
*
* @note This version must be used for pending events as it can differentiate.
*/
MessageContentModel *contentModelForEvent(NeoChatRoom *room, const Quotient::RoomEvent *event, bool isReply = false);
/**
* @brief Returns the thread model for the given thread root event ID.
*
* A model is created if one doesn't exist. Will return nullptr if threadRootId
* is empty.
*/
ThreadModel *modelForThread(NeoChatRoom *room, const QString &threadRootId);
/**
* @brief Get a PollHandler object for the given event Id.
*
* Will return an existing PollHandler if one already exists for the event ID.
* A new PollHandler will be created if one doesn't exist.
*
* @sa PollHandler
*/
Q_INVOKABLE PollHandler *handlerForPoll(NeoChatRoom *room, const QString &eventId);
private:
explicit ContentProvider(QObject *parent = nullptr);
QCache<QString, MessageContentModel> m_eventContentModels;
QCache<QString, ThreadModel> m_threadModels;
QCache<QString, PollHandler> m_pollHandlers;
};